[quote=@Pathfinder]
[@Kafka Komedy]
I'm still working out the kinks of his background, but basically, Mortarion's home was struck by lighting when he was younger. Not a big deal when you're a human but for a bug, it might as well been a death beam from space that vaporized the little village. He's going to do some dazed wandering, have an up close and personal experience with some insecticide (like a drop), pull through and trip out for like a week. I'm going to leave it ambiguous if Gods are actually talking to Mortarion or if he's just a little nuts.

As for the name, I'm going to give him a nicknames/titles since he believes "My name died on that day" or some such cryptic nonsense. So Mortarion is French and now I gotta make up some new names. For now, his umbrella term will be the Black Doctor.
[/quote]

If his home was destroyed by lightning, it might explain a hatred of the moth/butterfly religion, who worship The Light. If he takes a French name, it might be out of vengeful irony (since the only people who might use French sounding names would be moths/butterflies), or maybe while lost, he was taken in by a priest of The Light, given a new name, and taught spirituality, but later ultimately rejected The Light and deviated.